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Simplifying 13 + 9x = 7(x + -4) + 2x Reorder the terms: 13 + 9x = 7(-4 + x) + 2x 13 + 9x = (-4 * 7 + x * 7) + 2x 13 + 9x = (-28 + 7x) + 2x Combine like terms: 7x + 2x = 9x 13 + 9x = -28 + 9x Add '-9x' to each side of the equation. 13 + 9x + -9x = -28 + 9x + -9x Combine like terms: 9x + -9x = 0 13 + 0 = -28 + 9x + -9x 13 = -28 + 9x + -9x Combine like terms: 9x + -9x = 0 13 = -28 + 0 13 = -28 Solving 13 = -28 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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